Hi!
I noticed a problem in 8250.c.
My board has only one UART port, and is 16550 compatible, so in function
serial8250_interrupt I see that serial_in function is called twice. Second
time, code "else if (end == NULL)" is executed and function return IRQ_NONE.
This causes an entry in /proc/irq/spurious:
count 239
unhandled 1
last_unhandled 4294700846 ms
But this is not a spurious interrupt.
Regards.